Hi all -- I'm a classically-trained horn player making the transition to jazz.

On ballads I can hear the changes coming and have time to play truly by ear, and because I'm already technically capable I can always play what I hear in my head to good effect.

But when things start speeding up I get seriously flummoxed. It's not a strictly technical thing, I can play almost anything when reading sheet music, but I almost immediately get behind on the changes and its a mess.

So, I ask you, how did you work up to playing fast? What practice techniques or other work can you recommend that will help me keep my head on faster tunes?

Thanks for any help...